Attachment for preventing the feeding of ball-cartridges to a gun



S. G. GREEN.

ATTACHMENT FOR PREVENTING THE FEEDING OF BALL CARTRIDGES TO A GUN.

APPLICATION FILED MA-Y26.19L9.

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SAMUEL G. GREEN, OF THE UNITED STATES ARMY.

ATTACHMENT EOE PREVENTING THE FEEDING or BALL-CARTRIDGES To a GU Specification of Letters Patent.

Patented @ct. a, 19cc.

Application filed May 26, 1919. Serial No. 299,968.

To all whom it may concern:

Be it known that T, SAM JEL G. GREEN, of

the United States Army, a citizen of the United States,'stationed at Washington, D. C., have invented an Improvement in Attachments for Preventing the Feeding of Ball Cartridges to a Gun, of which the following is a specification.

The invention described herein may be used by the Government, or any of its oficers or employees in prosecution of work for the Government, or by any other person in the UnitedStates, without payment of any royalty thereon.

This inventionrelates generally to a machine gun wherein ammunition is fed automatically to the gun, and, more specifically, to an attachment for preventing the feeding of ball cartridges to the gun, the said attachment also forming a forward stop for blank cartridges.

A device of this character is desirable and useful to permit the use of blank cartridges during maneuvers and for saluting purposes and it renders the chances of an accident due to the feeding of a ball cartridge to the gun extremely remote.

With the foregoing objects in view, the invention resides in the novel arrangement and combination of parts hereinafter described, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is shown in the accompanying drawing, wherein T Figure 1 is a fragmentary plan view of a lock-frame and barrel-extension of a machine-gun, the cover removed and the bolt withdrawn, the attachment constructed in accordance with the invention shown in place therein;

Fig. 2 is a side elevationof the same, the

.cover in place and closed;

Fig. 3 is a perspective of the attachment or cartridge stop.

Referring to the drawings by numerals of reference The usual barrel extension, 10, is provided, which is bored to receive the barrel, 11, with a sliding? fit so'that the barrel may reciprocate therein. A cooling jacket, 12, is suitably secured to the forward end of the barrel extension and encases the forwardly projecting portion of the barrel, 11. The barrel extension;' is formed at its forward end with an upstanding portion, 18, cut away to provide ears, 14, to which the cover, 15, may be pivotally connected or hinged.

A front cartridge stop, 16, is provided on the; barrel extension and consists of an inwardly projecting pin, as seen most clearly in dotted lines in Fig. 1. A rear cartridge stop, 17, is also formed on the extension and is slotted to. permit the passage of the trigger (not shown) of the belt-feeding-pawl, 18, which is connected to the cover, 15.

A. belt holding pawl bracket, 19, is formed on one side of the barrel extension and this bracket is notched or apertured, as at 20 and 21, the notch, 20, forming a space for the reception of a belt holding pawl, 22,

which is retained in place by the split pin,

23, inserted in a bore extending longitudi nally of the bracket.

For the purpose of carrying out the ob jects of the present invention any means may be resorted to for automatically stopping a ball cartridge from being-fed to the gun; The means herein illustrated consisting in a formed block, 24, provided with a laterally extending lug, 25, which is adapted to enter the forward notch or aperture, 21, and this lug is bored to receive the split pin, 28, by which it is held in place. The block, 24:, is provided with a recess or socket, 26, in that end remote from the end at which the lug, 25, is formed and this socket is adapted to receive the front cartridge stop, 16, to retain the block in place in the barrel extension. The block, 24, is formed at its rear face with an extending shoulder, 27, which serves to engage the forward end of a blank cartridge and stop the same in proper position to be grasped by the extractor (not shown).

In practice the belt is fed through the gun with "the usual step by step movement under the action of the belt feeding pawl, the movement of the belt being limited by the movement of the pawl and the forward stop shoulder, 27, and usual rear stop, 17. Should a ball cartridge be present in the belt by accident or otherwise, the same could not be fed into the gun but would be stopped by the ball coming in contact with the near end face of the block, 24.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is;

1. The combination with a machine gun including ammunition, feeding mechanism, of means connected to the gun to prevent feeding of ball ammunition thereto, said means providing a forward stop for blank cartridges.

2. The combination with a machine gun including cartridge feeding mechanism, of means detachably connected to the un to prevent feeding of ball ammunition t ereto, said'means roviding a forward stop for blank cartri ges.

3. The combination with a machine gun including cartridge feeding mechanism of a formed block connected to the gun to prevent feeding of ball cartridges thereto, said block providing a forward stop for blank cartridges.

4. The combination with amachine gun including cartridge feeding mechanism, of a formed block detachably connected to the gun adjacent the cartridge feeding mechanism and acting to sto feeding of ball cartridges to the gun, said block providing a forward stop for blank cartridges.

5. The combination with a machine gun including cartridge feeding mechanism and a forward cartridge stop, of means connected to the gun and engagingthe stop to prevent feeding of ball cartridges to the gun.

6. The combination with a machine gun having cartridge feeding mechanism including a forward cartridge stop of means connected to the gun and engaging the stop to prevent feeding of ball cartridges to the gun and form a forward stop for blank cartridges.

7. The combination with a machine gun including cartridge feeding mechanism and a forward cartridge stop, of a formed block attached to the gun and engagi the cartridge stop to prevent feeding 0 ball cartridges to the gun;

' 8. The combination with amachine gun including cartridge feeding mechanism and a forward cartridge stop, of a block having an aperture to receive theforward stop positioned on the-gun to prevent feeding of ball cartridges to the gun.

9. The combination with a' machine gun including cartridge feeding mechanism and a forward cartridge stop, of an element adaptblank cartridges and an abutment to pre-.

vent feeding of ball cartridges to the gun.

11. The combination with a machine gun including cartridge feeding mechanism, a forward cartridge stop, and a belt holding pawl split pin; of a formed block, a lug on the block, said lug apertured to receive the split pin whereby the block is connected to the gun, said block provided with a socket for the reception of the forward stop to hold the block in place, the block positioned to prevent feeding of ball cartridges to the n. 112. An attachment for automatic guns in eluding a formed block adapted for detach-- able connection to a gun to prevent feeding ball cartridges to the gun and form a forward stop for blank cartridges.

13. An attachment for automatic guns in- 4 eluding a formed block adapted for detachable connection to a gun, to provide a stop for ball cartridges, the said block having an apertured lug at one end and a socket at the other whereby the block is connected to the 14. An attachment for automatic guns including a formed block adapted for detachable connection to a gun, the said block having an apertured lug at one end and a socket at theother whereby the block may be connected to the gun, there being a shoulder on the block to form a forward stop for blank cartridges.

SAMUEL G. GREEN. 

